Arqade is a question and answer site for passionate videogamers on all platforms. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I know is not a wise idea to play LoL in windows XP, but its all I have and after shutting down some processes and lowering graphics I got a steady 15-30 fps (which is fine for me).

However, I noticed some sounds freeze my game for 0.3 seconds the first time they are played (e.g Sona spells), and late-game, when many explosions and things are going on, I simply can't play with the sound enabled.

This problem is gone when I disable all sounds, but I really need to hear pings and turrets attacking me.

I need to know how to mess around with .FSB files, also I am open to alternative solutions to my problem, maybe there is a line I can add to game.cfg or something.

edit: I just downloaded a program fsbext and I managed to extract sound effects, my theories were right, Sona stuff is the heaviest (e.g sona_hymnofvalor_melody_5 is 370KB), I will now find a way to create a .FSB from these sounds but overwriting the heavy ones with Ahri.ultimateeffort2 which is only 4KB

share|improve this question
If you are playing on an old desktop try getting a new sound card. That will decrease lag from sounds. What kind of machine do you have? – Anubian Noob Jun 1 '13 at 16:16

This worked for me:

  1. download the program 'fsbext'
  2. move it to C:\FSbext
  3. go to C:\LeagueOfLegends\League of Legends\RADS\projects\lol_game_client_en_us\managedfiles
  4. locate the latest version (you can sort by recently-modified for this)
  5. then go to ...\Data\Sounds
  6. backup LoL_Audio_en_US.fev and VOBank_en_US.fsb
  7. create a copy of LoL_Audio_en_US.fev and VOBank_en_US.fsb at C:\FSbext
  8. run CMD
  9. in CMD, type:
    • cd..
  10. repeat #9 until you are at "C:\"
  11. in CMD, type:
    • cd FSbext (you should now be at "C:\FSbext" after this)
  12. (Warning: around 6.5k tiny files will extract after this in C:\FSbext) in CMD, type:
    • fsbext -s build.dat VOBank_en_US.fsb
  13. (edit the sounds, overwrite the heavy ones, etc) Note: I try to only overwrite 'mono' with 'mono', 'stereo' with 'stereo', etc, as I am not sure what will happen if you replace one with a different one.
  14. I noticed fsbext fail to extract Interactive3DReturningToBase._10 correctly, To Fix This: manually rename Interactive3DReturningToBase._10 to Interactive3DReturningToBase._10.mp3. And open the 'build.dat' we created (C:\FSbext\build.dat) with a text editor and search for Interactive3DReturningToBase._10, the first result will be the header, do NOT change that one, keep reading until you find the second Interactive3DReturningToBase._10, then change it to Interactive3DReturningToBase._10.mp3
  15. (if you closed CMD, repeat the steps #8 to #11) in CMD, type:
    • fsbext -s build.dat -r new.fsb
  16. rename new.fsb to VOBank_en_US.fsb
  17. overwrite the old VOBank_en_US.fsb with the new one in the LoL dir
share|improve this answer
instead of repeating cd.., you can also just type `cd \`, which returns you to the root directory. – user28015 Jul 1 '13 at 18:24
@NoneOfYourBusiness It's interesting how fast people forget to remember how DOS works. It's just been... wait, what? 15 years since Win98? Really? D*mn, i'm getting old :( – dbemerlin Jul 1 '13 at 20:44

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.